SU659064A3 - Insecticide - Google Patents

Description

This invention relates to chemical plant protection products. An insecticidal derivative is proposed. carbamic acid sulphides. An insecticide is already known, the active substance of which is o-alkylmercapoacetaloxime 1. However, the known compound has a lack of precise activity at low dosage rates. The aim of the invention is to find new products with higher insecticidal activity. This goal is achieved by using an agent comprising an active substance and a liquid or solid carrier containing as the active substance derivatives of sulfamides of carbamic acid of general formula C K-0-C-H-S, where RI is methyl, ethyl; R is alkyl Cj-Cg or cycloalkyl Ca-Cgj RS is hydrogen, alkyloxy Ci-Cj or cycloalkyl, in the amount of 0.5-98.5 wt.%. Forms of the use of conventional means: granules -; sprays, sprays, pastes, emulsions, solutions. They are prepared using common methods in the manufacture of pesticide formulations. The compounds according to the invention are obtained by reacting a compound of the general formula CH ;; :: o N-o-c-NC ILlSH where RI has the indicated meanings, in the presence of a base, with a compound of the general formula V Hal-S-H where Rj and RS have the indicated values. The reaction temperature of the moquette varies widely (from -20 to +80 ° C) at normal or at a reduced pressure. In this way, the compounds given in Table 1 are obtained. one.

about sns

h I Sh

"K-0-C-N S-N;

Table 1

COUj

Example. Insect long lasting as intestinal and against Dysdarcus fasciatus. Cotton bushes are sprayed with a 0.05% aqueous emulsion of a biologically active substance (obtained from lOJ & Horb emulsifying state concentrate). After the precipitate has dried, each of the plants is infected with Oysdercus fasciatus Lai larvae. The estimated destruction achieved is 2, 4, 24, and 48 hours. In the case of 100% destruction, after 48 hours, the plants are again infected with fresh experimental parasites and measured at the same time intervals up to 48 hours. To reach 100% kill, the test is repeated a third time, 8 days after the start of the test. The experiments were carried out at 20 ° C and 60% relative humidity. As compounds for comparison, lime compounds of the following formulas are used: Cttx-S-CG-O-C-LH 111 I "0) CHj about cps CrH5 - 3 - with N-o -c - NH 1% about CHj The results of the experiment are presented in tab. 2. Table2

Continued table. 2

Example 3. The study of the toxicity of the proposed compounds in relation to warm-blooded.

LDso and rat pesOS mg / kg toxicity:

370

Connection 1 262 Connection 2 17-24 Connection 20 Connection 21 15

Thus, the proposed compounds have a high insecticidal action.

Claims (1)

Invention An insecticidal agent containing derivatives of carbamic acid sulphides as an active substance, as well as an additive selected from the group of solid or liquid carriers, contains those which, with an enhanced chain of insecticidal activity, contain of carbamic acid sulfide derivatives, a compound of the general formula O CH} SNS 11 Lg  C N-0-0-If-S-K RiS COUj where RI is methyl, ethyl; Ra is an alkyl Ci-Cg iH cycloalkyl Cj-Cs; Yaz - hydrogen, alkyloxy Ci-Ce or cyclopropyl, in the amount of 0.5-95.5 wt.%. Priority featured: 06/22/76 with R, - methyl, ethyl; R2 is alkyl C1-Cg, cycloalkyl C3 Rj is hydrogen, alkyl 1 oxyl C3 -Cg, 1shklopr (thyl; 05/13/77 with Ra - cycloalkyl C7-C8. Sources of information taken into account in the examination I. Patent Franch {and № 1521784, cl. Since 07, 1968.